Phottix Indra 500 TTL with battery & Nikon trigger pentax adapter but these are vintage heads

but these are vintage heads made mostly of chromed metal

B+W 702 Grey 25% MRC F-Pro graduated ND filter for 77mm filter threads

with reliable development in 10-15 minutes

Also has an internal 49mm thread for rear-mounting filters

Phottix Indra 500 TTL with battery & Nikon trigger pentax adapter but these are vintage headsThe Phottix Indra 500 TTL is a compact digital strobe with an easy to use LCD control panel, built in wireless functionality, and a common Bowens style accessory mount. This is a capable, modern flash unit with an 8 stop range, full TTL functionality and high speed sync. A Phottix Indra battery pack is included, as is a Nikon compatible TTL radio transmitter with its own comprehensive control panel. Also includes a 7 reflector and a carrying case.